Rotary engine.



Patented Aug. 29, |899. R. TUENNE'S.

ROTARY ENGINE.

(Application led May 24, 189B.)

2 Sheets-Sheet (No Model.)

lll IHM iw i /NVENTOR THE NUHRIS PEYRS CD. PNUYOLITMD. WASHINGYON, Elv rI Patented Aug. 297 |899.

2 Sheets-Shut 2 R. TOENNES.

ROTARY ENGINE.

(Application filed May 24, 1899.)

A TTOHNE YS /N VEN TOE W/TNESSES NITED STATES PATENT Ormes.

RICHARD TOENNES, OF BOONJVILLE, MISSOURI.

ROTARY ENG'IN E.

SECIICATIN :forming part of Letters Patent No. 632,073, dated August 29,1899.

Application tiled May 24, 1899. Serial No. 718,037. (No model.)

To all whom may concern:

Be it known that I, RICHARD ToENNEs, of Boonville, in the county ofCooper and State of Missouri, have invented a new and improved RotaryEngine, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved rotaryengine which is simple and durable in construction, very effective inoperation, arranged to utilize the motive agent expansively to thefullest advantage, and to allow of convenient reversing wheneverdesired.

The invention consists of novel features and parts and combinations ofthe same, as will be fully described hereinafter and then pointed out inthe claims.

A practical embodiment of my invention is represented in theaccompanying drawings, forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure 1 is a rear elevation of the improvenient with part of the coverremoved. Fig. 2 is a transverse section of the same on the line 2 2 inFig. 1. Fig. 3 is a sectional front elevation of the same. Fig. 4: is asectional plan view of the piston on the line 4 4 in Fig. 3. Fig. 5 isan end elevation of the same, and Fig. G is a face View of thereversingvalve.

The improved rotary engine is provided with a cylinder A, in which ismounted eccentrically a piston B, provided with a springpressed slidablepiston-head C and secured on the main or driving shaft D, extendingthrough the front cover A' of the cylinder to be journaled in suitableoutside bearings (not shown) and to be connected with the machinery tobe driven either by the usual pulley and belt or other connection.

In the rear of the cylinder A is formed a steam-chest E, connected by apipe E' with a suitable source of motive-agent su pply-such as steam,compressed air, or other fluidunder pressure-and this steam-chest E isconnected by two ports aand b with the inside of the cylinder A at theopposite sides of a spring-pressed packing F, set in the bottom of thecylinder and in contact at all times with the peripheral surface of thepiston. The

ports a and o are controlled by a reversing versin g slide-valve H to anintermediate po- Y sition neither of the ports c or d registers with itscorresponding port a or b, and the steam is shut off from the cylinder.The slide-valve H is provided with a stem Il', extending through astufling-box on one side of the chest E to connect at its outer end withthe lower end of a leve1 l under control of the operator and having apointer l indicating on a segment J for holding the said valve H in aclosed positionthat is, its ports c and d out of register with the portso and b-or to connect either of said ports c or d with its correspondingport a or b fully, three-fourths, half, or only one-fourth to admit moreor less steam, as desired-that is, to allow a sooner or later cut-off ofthe motive agent for expansion pui"- poses, Whether the engine isrunning forward or in a reverse direction.

On the inner face of the valve H, between the ports c and d, is formed acavity f for connecting either of the ports a and b with theexhaust-port g,leading to the exhaust-pipe L. When the port cis inregister With the port a, then the cavityf connects the port b with theexhaust-port g, and when the port d is in register with the port b thecavity f connects the port a with the exhaust-port g.

On the face of the slide-valve H oscillates a valve K, having a port eadapted to open or close the corresponding port c or d for the admissionof steam to the cylinder A, and said oscillating valve K is hung on astud K, mounted in the top of the cylinder A, and the said valve K isprovided with an elongated slot K2, in which works an eccentric disk N,to impart a swinging motion to the valve K to bring its port e in `orout of register With the port c or d active at the time to admit steamto either side of the cylinder A by either of the ports a or b. Theeccentric disk N is secured on the driving-shaft extension D', so thatwhen the machine is in operation and the piston Bis revolving thedesired motion is IOO given to the oscillating valve K for the purposementioned.

The piston-head C is provided with ashank litt-ed in a slot B, formeddiametrically in the piston B, and this shank is made in sections C C2,each consisting of two plates C3 C4, pressed apart by a spring C5, (seeFig. 4,) and the plates of the two shank-sections break joints, as willbe readily understood by reference to said Fig. 4:. The inner end of theshank rests on a spring C, preferably of compound elliptical leat1 form,as indicated in Fig. 4, and the outer end ot' said shank is formed intoa transversely-extending pivot C7, on which is mounted to rock a headC8, made in sections C9 C10, of which the section C9 has a tongue C11slidably engaging a groove in the other head-section C10 and pressedapart by springs C12, so as to firmly t on the heads of the cylinder Athe same as the plates C3 C4, which are pressed outward by the action oftheir springs C5 to bring the outer edges of the shank in firmengagement with the heads of the cylinder and insure proper packing toprevent leakage of steam from one side of the head to the other.Packingrings P are held in the cylinder-back and in the head A' of thecylinder to engage the faces of the piston B to prevent leakage of steamto the bearings for the shaft D. (See Fig 2.)

The outer end of the slot B is sufliciently enlarged to receive the headCs at the time the latter passes the packing F.

The operation is as follows: Then the several parts are in the positionillustrated in the drawings, then the motive agent in the steam-chest Ecan pass through the registering ports e, CZ, and b into the cylinder Aat the right-hand side of the abutment to act on the piston-head C andturn the piston B in the direction of the arrow a'. (See Fig. 3.) As theshaft D is rotated a rocking motion is given to the valve K, so that thelatter finally cuts off the motive agent from the ports d and b to allowthe motive agent in the cylinder to expand to the desired degree. Theport e again moves in register with the ports CZ and b, so that themotive agent is again admitted to the cylinder to give another impulseto the piston in the manner above described. Then it is desired toreverse the engine, the operatorsimply swings the lever I over totheopposite side to move the ports d and ZJ out of register and the ports dand c in register. The motive agent from the chest E now passes, by wayof the port e and the registering ports a and c, into the cylinder atthe left-hand side of the abutment F to rotate the piston B in theinverse direction of the arrow a'. The exhaust now takes place throughthe port 79, cavityf, exhaust-port g, and exhaust-pipe L.

From the foregoing it is evident that the engine is very simple anddurable in construction, is not liable to get out of order, and permitsthe operator to quickly reverse the engine whenever desired.

Having thus fully described my invention,

I claim as new and desire to secure by Letters Patent- 1. A rotaryengine, comprising a cylinder, a piston mounted eccentrieally thereinand provided with a spring-pressed piston-head in contact with the innersurface of the cylinder, a steam-chest at one end of the cylinder andconnected with a motive-agent supply, and by inlet-ports with saidcylinder at opposite sides of the point of contact between the pistonand cylinder, a reversing-Valve under control of the operator andmovable in said steam-chest, and adapted to open or close either or bothof said inlet-ports, and a rockvalve driven from the piston-shaft andadapted to alternately register with ports in said reversing-valve,substantially as shown and described.

2. AA rotary engine, comprising a cylinder, a piston mountedeccentrieally therein and provided with a spring-pressed piston-head infrictional con tact with the inner surface of the cylinder, asteam-chest at one end of said cylinder and connected with amotive-agent supply and by inlet-ports with said cylinder, areversing-valve under control of the operator, and movable in saidsteam-chest and adapted to open or close either of said inletports, arock-valve operating over said slidevalve and having a single portadapted to register with the registering ports of the reversing-valveand the cylinder-ports, and means for imparting a rocking motion to saidrock-valve, substantially as shown and described.

3. A rotary engine, comprising a cylinder, a piston mountedeccentrieally therein and provided with a spring-pressed piston-head infrictional contact with the inner surface of the cylinder, a steam-chestat one end of said cylinder and connected with a motiveagent supply andby inlet-ports with said cylinder, a reversing-valve under control ofthe operator, and movable in said steam-chest and adapted to open orclose either of said inlet-ports and connect the same With the eX-hanst, a rock-valve operating over said slidevalve and having a singleport adapted to register with the registering ports of thereversing-valve and the cylinder-ports, and means for imparting arocking motion to said rock-valve, substantially as shown and described.

4. A rotary engine, comprising a cylinder, a piston mountedeccentrieally therein and provided with a spring-pressed piston-head infrictional contact with the inner surface ot' the cylinder, asteam-chest at one end oi' the cylinder and connected with a motiveagentsupply, and by inlet-ports with said cylinder at opposite sides of thepoint of contact between the cylinder and the piston, a reversing-valveunder control of the Operator and movable in said steam-chest, andadapted to open or close either or both of said inlet-ports and connectthe same with the exhaust, a rockvalve driven from the piston-shaft andadapt IOO IXO

ed to alternately register with ports on said reversing-valve, andmeans, 'substantially as described, for shifting the said reversing-valve for reversing or stopping purposes, as set forth.

5. A rotary engine, provided with a piston having a slot, a compoundleaf-spring in the bottom of said slot, a piston-head in said slot andpressed on by said spring, said pistonhead consisting of a shank made inparts or sections breaking joints and formed at its outer end With apivot, and a head mounted to rock on said pivot and made in sectionsbreaking joints, substantially as shown and described.

6. A rotary engine provided with a piston having a slot, a compoundleaf-spring in the bottom of said slot, a piston-head in said slot andpressed on by said spring, said pistonhead consisting of a shank made inparts or sections breaking joints and formed at its outer end With apivot, and a head mounted to rock on said pivot and made in sectionsbreaking joints, said shank and head sections being pressed apart bysprings, as set forth.

7. A rotary engine having two main ports adapted to be used, one as asupply-port and the other as an exhaust-port, and reversed in functionwhen the engine is reversed, superl imposed reversing and cut-offvalves, the cutoff valve having a pivoting-arm extending across theengine-shaft and provided with a yoke surrounding the said shaft, and aneccentric upon the shaft engaging the sides of the yoke to swing thevalve, substantially as described.

S. A rotary engine having tWo main ports adapted to be used, one as asupply-port, and the other as an exhaust-port, and reversed in functionwhen the engine is reversed, said engine also having an exhaust-portindependent of the main ports, a reversing-valve bearing upon thevalve-seat and covering said ports, said re versing-valve having two thron gh steam-ports, and an exhaust recess or port on one side adapted,as the valve is shifted, to connect either main port with the exhaustport, the cut-off valve moving upon the re versing-valve and having apivoting-arm eXi tending across the engine-shaft and provided with ayoke surrounding said shaft, a fixed pivot for the end of said arm, andan eccentric upon the shaft engaging said yoke to swing the valve,substantially as described.

RICHARD TGENNES.

Witnesses:

WILL S. BECKETT, E. A. ECKHARD.

